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Finding the Fourth Proportional to 17,999.60, 26,999.40 and 14,281.70

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Solution

The fourth proportional to 17,999.60, 26,999.40 and 14,281.70 is: 21,422.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,999.60 : 26,999.40 = 14,281.70 : x
  2. Step 2: Convert to fraction form
    17,999.60/26,999.40 = 14,281.70/x
  3. Step 3: Cross multiply
    17,999.60x = 26,999.40 × 14,281.70
  4. Step 4: Simplify right side
    17,999.60x = 385,597,330.98
  5. Step 5: Solve for x
    x = 385,597,330.98/17,999.60
  6. Step 6: Final answer
    x = 21,422.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.